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#############################################################
## ##
## Copyright (c) 2003-2011 by The University of Queensland ##
## Earth Systems Science Computational Centre (ESSCC) ##
## http://www.uq.edu.au/esscc ##
## ##
## Primary Business: Brisbane, Queensland, Australia ##
## Licensed under the Open Software License version 3.0 ##
## http://www.opensource.org/licenses/osl-3.0.php ##
## ##
#############################################################
"""Defines the L{Arrow} base class"""
from Exception import raiseNotImplemented
from esys.lsm.util import Vec3
class ArrowExtractor(object):
def __init__(
self,
tailPtMap,
vecMap,
tailRadiusMap = lambda record: 0.10,
headRadiusMap = lambda record: 0.25,
headLengthMap = lambda record: 0.75,
modifierMap = lambda record: None,
lengthScale = 1.0
):
self.tailPtMap = tailPtMap
self.vecMap = vecMap
self.tailRadiusMap = tailRadiusMap
self.headRadiusMap = headRadiusMap
self.headLengthMap = headLengthMap
self.modifierMap = modifierMap
self.lengthScale = lengthScale
def getTailPt(self, record):
return self.tailPtMap(record)
def getVec(self, record):
return self.vecMap(record)
def getHeadPt(self, record):
return \
(
Vec3(self.getTailPt(record))
+
(Vec3(self.getVec(record))*self.getLengthScale())
)
def getHeadRadius(self, record):
return self.headRadiusMap(record)
def getTailRadius(self, record):
return self.tailRadiusMap(record)
def getHeadLength(self, record):
return self.headLengthMap(record)
def getModifier(self, record):
return self.modifierMap(record)
def getLengthScale(self):
return self.lengthScale
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